Estrogen is the most important of “female” hormones. Its deficiency occurs when estrogen level is low in the body.
This is usually observed during menopause, but sometimes it can occur even before the menopause stage too.
This disturbs the menstrual cycle, which leads to more disorders. Some women may also have early menopause that is before the 40s.
This also results in low estrogen levels in the body or also called as estrogen deficiency,